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wholesale jewelry charm Each (English Carat, German Karat's abbreviation, often writing "K") gold content is 4.166%, 18K = 18*4.166%= 74.998%, 24K = 24*4.166%= 99.984%
24k gold 99 99 %, 22K contains 91.7%, 18K contains 75.1%, 14K contains 58.5%, and 12K contains 50%.
The gold jewelry currently sold in the market is divided into foot gold and K gold jewelry. According to the provisions of the national standard GB11887, the content of several common gold jewelry is:
24K -the current market occasional label There are 24K gold jewelry. According to national standards, the theoretical value of 24K gold content should be 100 %, and gold has no barefoot. Therefore, it is strictly that 24K does not exist. The sales of 24K gold in sales are incorrect and do not meet national standards.
Thousands of gold -content is 99.9%, commonly known as three 9.
The gold -content is 99.0%, above, commonly known as two 9.
18K — the content is 75.0%. There are many colors of K gold, usually with yellow, red, and white. Among them, white K gold is actually alloy of gold, nickel, zinc, copper and other elements. It is not usually called platinum jewelry. Platinum refers to the expensive metal platinum (PT)
Maipan how to distinguish between true and false and quality when buying jewelry?
. View mark
National standards stipulate that precious metal jewelry should be produced, manufacturers, materials and content marks, and unsproting products are unqualified products. If a quality problem, quality inspection agencies may be given inspection and judgment according to the mark. Consumers should purchase the brand they need and the gold jewelry of different gold content according to the mark.
. Sensory inspection method:
1. Seeing color: Foot gold is dark yellow, K gold has yellow, red, white and other colors, and the imitation gold products are mostly copper alloy with lighter color.
2. 量 weight: The proportion of gold is 19.3g/cm3, which is much higher than the proportion of imitation gold products. For example, a foot gold ring is about 5 grams, and the same size imitation gold products are generally less than 3 grams.
3. Test hardness: Pure gold is soft, scratches with large head needles, bite tooth marks with teeth.
. If you need to accurately know the content of precious metal jewelry or quality disputes, you should go to the jewelry quality inspection institution and use a physical or chemical analysis method for identification. When buying jewelry, you also need to carefully check whether the stones are inlaid, whether the welding is firm or broken, burrs, trachoma, etc.
The maintenance of jewelry: When wearing and stored in gold jewelry, you should avoid contact with items such as lead and mercury (mercury), otherwise the surface of the jewelry will be discolored. Dry the jewelry during drying and bathing to prevent wear or bumps, let alone pull it hard to avoid deformation or broken.
In the jewelry for a period of time, there may be dirt, dark color, soak with a washing spirit, brushing it gently with a soft brush, rinse with water, and wear it after drying.
Brene (platinum) basic knowledge
platinum is also known as platinum. The symbol of the chemical element is PT, which is silver -white precious metal. , Following point 1768. C, it has many excellent characteristics, such as corrosion resistance, antioxidant, and beautiful colors. Because platinum has these characteristics, it can be used to make a beautiful and tough platinum jewelry. The jewelry, especially the white golden base, is inlaid with a flashed with a flashed with a fire color, and the pearl is combined to complement each other. It is currently the most popular jewelry jewelry.
The types of platinum jewelry (common in the market)
PT990 jewelry, also known as foot white gold jewelry, has a platinum content of not less than 90 %.
PT900 jewelry, its platinum content is not less than 900 %.
PT850 jewelry, its platinum content is not less than 80 %.
The mark of Platinum Jewelry:
Materials and content marks: for example: PT900, which means that the platinum content is not less than 900 %.
manufacturer of manufacturer: such as Beijing E, indicating production manufacturers.
diamond weight: such as: d0.26, indicating that the inlaid diamond weighs 0.26 carats.
The consumers should pay special attention to the imprint when purchasing jewelry, and distinguish the platinum (platinum) jewelry from the white K gold jewelry. The white 18K gold mark is 18K, and the platinum (platinum) is PT.
Basic knowledge of silver jewelry
silver, chemical element symbols are AG, which are silver -white precious metals, low hardness, density of 10.5%/cm3, and melting point 960. C, has good conductivity, ductility, and thermal conductivity. In addition to the use of electronics, medical, and photographic industries, it is also used to manufacture currency, jewelry, utensils, etc.
Callow category (common in the market)
S990 foot silver jewelry has a silver content of not less than 990 %.
S925 silver jewelry has a silver content of not less than 925.
The mark of the silver jewelry:
M material and content marks, such as: S925, indicating that the silver content of the jewelry is not less than 925 in thousands of tentures.
manufacturer of manufacturers such as: Beijing A, indicating that a manufacturer is produced.
basic knowledge of jewelry and jade
At present, high -end jewelry on the market is diamonds, rubies, sapphires, jadeite, high -quality breeding pearls, and mid -range gems include garnet, amethyst, gold, Topa stone. In the past two years, jade decorations such as corals, malachite, turquoise, and Dongling Stone have also become popular.
The authentic identification of gemstones has always been a matter of concern for consumers. Buying gem jewelry and buying at a regular jewelry shop or jewelry counter in a large shopping mall, the quality is guaranteed. If quality problems or questions occur, you can consult an expert or go to the relevant quality inspection agency for identification.
What kind of gemstone is the most expensive? For this issue, it cannot be generalized, but according to the value and scarcity of natural gems, the precious gem varieties recognized in the international jewelry industry include diamonds, emeralds, rubies, sapphires, and golden emeralds. Enter it. But which gemstone is the most expensive? This depends on the specific situation. The value of gemstones depends on the quality and scarcity of the gem itself. There are relatively precious gems in each type of gemstone. For consumers, you can buy the ability to buy according to your preferences.
With the popularity of diamonds, people's concern for diamonds is no longer limited to the identification of authenticity, but the quality of diamonds. Internationally, it is usually based on the principle of 4C, that is,:
carat weight: 1 carat is equal to 200 mg.
Clearness: divided into six levels of FL, IF, VVS, VS, SI, and I. The market is more common in the market.
color: from D, E, F, LLN and cutting: divided into good, good, general.
The understanding of diamond classification knowledge will help purchase prices and quite reasonable quality diamonds.
The color gems, such as rubies, sauggats, etc., the quality depends on its color, transparency, flaws, cutting and other factors. Wash gem jewelry, generally take a bowl of warm water, add a small amount of detergent, wash it with small brushes with water, then rinse with water, and then dry the water with a cloth, dry the soft silk cloth. Storage of gem jewelry, be careful not to place all the jewelry in a box at the same time, because the jewelry inlaid on the jewelry will rub each other, causing the gem damage and losing luster.
Is keeping in mind the standard for measuring the quality of a diamond -4C
"4C" is the measurement standard for you to determine the value and quality of a diamond. The so -called "4C" is the abbreviation of four English words starting with C. It refers to the caraat weight, clarity, color, and cut (CUT). Just comprehensively appreciate the four points of "4C", you can easily understand the value and quality of a diamond. Diamond jewelry price = weight color clarity cutting.
carat weight
The diamond weight is calculated in carats. 1 carat = 200 mg = 0.2 grams. One carat is divided into one hundred copies, each called one point, 0.75 carats 75 points, and 0.09 carats are 9 points. In the case of similar conditions, as the weight of the diamond increases, the value of the value is increased geometrically; diamonds with the same weight will be far from the difference in color, clarity, and cutting.
Clarity
The diamond crystals in the mantle magma deep in the mantle of the earth. After hundreds of millions of years of geological changes, it inevitably contains various debris and flaws. The color, how much, size, and position distribution of these inside contains the effects of different degrees on diamond clarity. Usually, 10 times large mirror inside the diamond, surface defects and its degree of impact on gloriousness, and the clarity level of unsolved diamonds is subdivided into LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2, P3, 10, 10 level.
color (color)
The diamonds have many natural colors. From precious colorless (white after cutting), rare light orchids, pink to common yellowing. The more transparent, the more white light can penetrate, and the more colorful after refraction and color.
The diamond color grading is in the hierarchical environment of a professional laboratory. The technicians will be determined repeatedly with the standard color of the standard color than the standard color stones. The color of diamonds is divided into 11 levels, which are divided into: D, E, F, G, H, I, J, K, L, M, N.
Cut (CUT)
The brilliant glory of diamond is attributed to its unique high refractive index and high -color scattered performance. Diamonds are the hardest substances. They are not destructive, never worn, and they are glory and eternal. The method of judging the advantages and disadvantages of diamonds: pick up the diamonds, stare at the light at the top. The exquisite diamonds of the car are brilliant and dazzling. The level of the car is: good, good, general.
wholesale jewelry in vegas 18K gold is a metal with 75 percent of gold.
Platinum, which should be platinum. Platinum is the most valuable white metal.
The price gap between the platinum and 18K gold is very large.
18k gold About 180 yuan per gram in the Mainland.
, and platinum is about 350 to 450 yuan per gram. The more famous brand can reach 5.6 hundred yuan per gram.
and 18k gold and platinum do not belong to a series. Think about it. If you said, add money and buy it. It is estimated that it is not possible.
but if you buy it for a long time, you can take it as soon as possible.
It ’s.
In the general gold shops in the Mainland, K gold cannot be replaced by platinum.